* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Arial', sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }

        .register-container {
            background: white;
            padding: 40px;
            border-radius: 15px;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
            width: 100%;
            max-width: 500px;
        }

        .logo {
            text-align: center;
            margin-bottom: 30px;
        }

        .logo h1 {
            color: #333;
            font-size: 28px;
            margin-bottom: 5px;
        }

        .logo p {
            color: #666;
            font-size: 14px;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
            margin-bottom: 20px;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group.full-width {
            grid-column: 1 / -1;
        }

        label {
            display: block;
            margin-bottom: 8px;
            color: #333;
            font-weight: 500;
        }

        input[type="text"],
        input[type="email"],
        input[type="password"],
        input[type="tel"],
        select,
        textarea {
            width: 100%;
            padding: 12px;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            font-size: 14px;
            transition: border-color 0.3s;
        }

        input:focus,
        select:focus,
        textarea:focus {
            outline: none;
            border-color: #667eea;
        }

        textarea {
            height: 80px;
            resize: vertical;
        }

        .register-btn {
            width: 100%;
            padding: 12px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            cursor: pointer;
            transition: transform 0.2s;
        }

        .register-btn:hover {
            transform: translateY(-2px);
        }

        .register-btn:disabled {
            opacity: 0.6;
            cursor: not-allowed;
            transform: none;
        }

        .error-message {
            color: #e74c3c;
            font-size: 14px;
            margin-top: 10px;
            display: none;
        }

        .success-message {
            color: #27ae60;
            font-size: 14px;
            margin-top: 10px;
            display: none;
        }

        .login-link {
            text-align: center;
            margin-top: 20px;
        }

        .login-link a {
            color: #667eea;
            text-decoration: none;
        }

        .login-link a:hover {
            text-decoration: underline;
        }

        .vendor-fields {
            display: none;
            animation: fadeIn 0.3s ease-in-out;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(-10px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .password-strength {
            margin-top: 5px;
            font-size: 12px;
        }

        .strength-weak { color: #e74c3c; }
        .strength-medium { color: #f39c12; }
        .strength-strong { color: #27ae60; }

        .checkbox-group {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 20px;
        }

        .checkbox-group input[type="checkbox"] {
            width: auto;
        }

        .checkbox-group label {
            margin-bottom: 0;
            font-weight: normal;
            cursor: pointer;
        }

        @media (max-width: 600px) {
            .form-row {
                grid-template-columns: 1fr;
            }

            .register-container {
                padding: 30px 20px;
            }
        }